Heat accumulating type metal honeycomb gas electronic waste pyrolysis device and pyrolysis method

Abstract

The invention discloses a heat accumulating type metal honeycomb gas electronic waste pyrolysis device. The heat accumulating type metal honeycomb gas electronic waste pyrolysis device comprises an electronic waste pyrolysis reactor and a heat accumulating type gas heating system. The electronic waste pyrolysis reactor comprises a reactor shell and a material pyrolysis assembly. The material pyrolysis assembly crosses the reaction shell. The heat accumulating type gas heating system comprises a metal honeycomb, a heat accumulating type combustion device and a flue gas channel. The flue gas channel is a closed space formed between the reaction shell and the material pyrolysis assembly in a matched mode, the flue gas channel is communicated with the heat accumulating type combustion device, the metal honeycomb is arranged in the flue gas channel, and the material pyrolysis assembly crosses the metal honeycomb. The invention further discloses a device for pyrolysis of electronic waste through the pyrolysis device. The method includes the two steps that a spiral shell is heated through the heat accumulating type gas heating system, and material pyrolysis is carried out. By means of the pyrolysis device and method, continuous material inflow and outflow can be achieved, the heat source stability is good, the pyrolysis process is simple, and the pyrolysis efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of garbage pyrolysis, and in particular relates to a thermal storage type metal honeycomb gas-fired electronic waste pyrolysis device and a pyrolysis method. Background technique [0002] In recent years, all kinds of electronic products are changing with each passing day, and the new and old replacements are getting faster and faster, and the resulting electronic waste is increasing exponentially. The heavy metal elements contained in it will seriously pollute the environment. If electronic waste is not handled properly, it will produce toxic and harmful gases such as dioxin, causing secondary pollution. At present, the processing methods for electronic circuit boards mainly include mechanical physical methods, metallurgical extraction methods, biological treatment methods, and pyrolysis methods, among which mechanical physical methods, metallurgical extraction methods, and biological treatment methods main...

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Problems solved by technology

The above-mentioned device uses the hot air exchanger directly arranged at the outlet of the combustion oxidizer to intercept part of the high-temperature heat energy in the combustion flue gas of electronic waste to produce primary and secondary hot air above 600°C and return it to the melting combustion and oxidation combustion of electronic waste. This kind of pyrolysis method has low efficiency, complex process, and also has the problem that continuous feeding and discharging cannot be realized.

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